Question

1abc : 3 = abc tìm abc

Answer 1

1bac : 3 = abc

1000 + abc = abc x 3

1000 = abc x 3 - abc x 1

1000 = abc x (3 - 1)

1000 = abc x 2

abc   = 1000 : 2

abc   = 500 

Answer 2

1abc = 1000 + abc

Ta co:

1000 + abc = 3abc

1000 = 3abc - abc

1000 = 2abc

abc = 1000:2=500

Vay abc = 500

Dáp so: 500

Answer 3

Ta có:

1000 + abc = 3abc

1000  = 3abc - abc

1000 = 2abc

Vậy abc = 1000 : 2 = 500

Answer 4

1abc : 3 = abc

1000 + abc = abc * 3

1000 = abc * 3 - abc * 1

1000 = abc * ( 3 - 1 )

1000 = abc * 2

abc = 1000 : 2

abc = 500